一．前言.预览
申明：WPF自定义控件与样式是一个系列文章，前后是有些关联的，但大多是按照由简到繁的顺序逐步发布的等，若有不明白的地方可以参考本系列前面的文章，文末附有部分文章链接。
本文主要是对文本输入控件进行样式开发，及相关扩展功能开发，主要内容包括：
- 基本文本框TextBox控件样式及扩展功能，实现了样式、水印、Label标签、功能扩展；
- 富文本框RichTextBox控件样式；
- 密码输入框PasswordBox控件样式及扩展功能；
效果图：
二．基本文本框TextBox控件样式及扩展功能
2.1 TextBox基本样式
样式代码如下：
<!--TextBox默认样式--> <Style TargetType="{x:Type TextBox}" x:Key="DefaultTextBox"> <Setter Property="ContextMenu" Value="{DynamicResource TextBoxContextMenu}" /> <Setter Property="SelectionBrush" Value="{StaticResource TextSelectionBrush}" /> <Setter Property="FontFamily" Value="{StaticResource FontFamily}" /> <Setter Property="FontSize" Value="{StaticResource FontSize}" /> <Setter Property="BorderThickness" Value="1" /> <Setter Property="MinHeight" Value="26" /> <Setter Property="Width" Value="100" /> <Setter Property="Background" Value="{StaticResource TextBackground}" /> <Setter Property="Foreground" Value="{StaticResource TextForeground}" /> <Setter Property="Padding" Value="0" /> <Setter Property="BorderBrush" Value="{StaticResource ControlBorderBrush}" /> <Setter Property="local:ControlAttachProperty.FocusBorderBrush" Value="{StaticResource FocusBorderBrush}" /> <Setter Property="local:ControlAttachProperty.MouseOverBorderBrush" Value="{StaticResource MouseOverBorderBrush}" /> <Setter Property="VerticalContentAlignment" Value="Center" /> <!-- change SnapsToDevicePixels to True to view a better border and validation error --> <Setter Property="SnapsToDevicePixels" Value="True" /> <!--英 ['kærət] 美 ['kærət] 插入符号--> <Setter Property="CaretBrush" Value="{StaticResource TextForeground}" /> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type TextBox}"> <Grid x:Name="PART_Root"> <Border x:Name="Bg" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" CornerRadius="{TemplateBinding local:ControlAttachProperty.CornerRadius}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" /> <Grid x:Name="PART_InnerGrid"> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto" /> <ColumnDefinition Width="*" /> <ColumnDefinition Width="Auto" /> </Grid.ColumnDefinitions> <!--Label区域--> <ContentControl x:Name="Label" Margin="1" Template="{TemplateBinding local:ControlAttachProperty.LabelTemplate}" Content="{TemplateBinding local:ControlAttachProperty.Label}"/> <!--内容区域--> <ScrollViewer x:Name="PART_ContentHost" BorderThickness="0" Grid.Column="1" IsTabStop="False" Margin="2" VerticalAlignment="Stretch" Background="{x:Null}" /> <!--水印--> <TextBlock x:Name="Message" Padding="{TemplateBinding Padding}" Visibility="Collapsed" Text="{TemplateBinding local:ControlAttachProperty.Watermark}" Grid.Column="1" Foreground="{TemplateBinding Foreground}" IsHitTestVisible="False" Opacity="{StaticResource WatermarkOpacity}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Margin="5,2,5,2" /> <!--附加内容区域--> <Border x:Name="PART_AttachContent" Grid.Column="2" Margin="2" VerticalAlignment="Center" HorizontalAlignment="Center" > <ContentControl VerticalAlignment="Center" VerticalContentAlignment="Center" Template="{TemplateBinding local:ControlAttachProperty.AttachContent}" /> </Border> </Grid> </Grid> <ControlTemplate.Triggers> <!--显示水印--> <DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Path=Text}" Value=""> <Setter TargetName="Message" Property="Visibility" Value="Visible" /> </DataTrigger> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="BorderBrush" Value="{Binding Path=(local:ControlAttachProperty.MouseOverBorderBrush),RelativeSource={RelativeSource Self}}"/> </Trigger> <Trigger Property="IsFocused" Value="True"> <Setter Property="BorderBrush" Value="{Binding Path=(local:ControlAttachProperty.FocusBorderBrush),RelativeSource={RelativeSource Self}}"/> </Trigger> <!--不可用--> <Trigger Property="IsEnabled" Value="False"> <Setter TargetName="PART_Root" Property="Opacity" Value="{StaticResource DisableOpacity}" /> </Trigger> <!--只读时，禁用PART_AttachContent--> <Trigger Property="IsReadOnly" Value="True"> <Setter TargetName="PART_AttachContent" Property="IsEnabled" Value="False" /> <Setter TargetName="Bg" Property="Opacity" Value="{StaticResource ReadonlyOpacity}" /> <Setter TargetName="PART_ContentHost" Property="Opacity" Value="{StaticResource ReadonlyOpacity}" /> <Setter TargetName="Label" Property="Opacity" Value="{StaticResource ReadonlyOpacity}" /> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> 模板内容主要包含四部分：
- 用于实现Label标签的预留区域；
- TextBox本身的文本输入显示部分；
- 水印显示部分；
- 功能扩展的预留区域；
其中Label标签、功能扩展，还有输入框的不同状态显示效果都是通过附加属性来实现的，其实从本质上附加属性和控件上定义的依赖属性是同一个概念，有些时候附加属性会更加方便，对于一些可共用的属性，就比较方便，这一点怎本文是有体现的。上面代码使用到的附加属性代码：
#region FocusBorderBrush 焦点边框色，输入控件 public static readonly DependencyProperty FocusBorderBrushProperty = DependencyProperty.RegisterAttached( "FocusBorderBrush", typeof(Brush), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(null)); public static void SetFocusBorderBrush(DependencyObject element, Brush value) { element.SetValue(FocusBorderBrushProperty, value); } public static Brush GetFocusBorderBrush(DependencyObject element) { return (Brush)element.GetValue(FocusBorderBrushProperty); } #endregion #region MouseOverBorderBrush 鼠标进入边框色，输入控件 public static readonly DependencyProperty MouseOverBorderBrushProperty = DependencyProperty.RegisterAttached("MouseOverBorderBrush", typeof(Brush), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(Brushes.Transparent, FrameworkPropertyMetadataOptions.AffectsRender | FrameworkPropertyMetadataOptions.Inherits)); /// <summary> /// Sets the brush used to draw the mouse over brush. /// </summary> public static void SetMouseOverBorderBrush(DependencyObject obj, Brush value) { obj.SetValue(MouseOverBorderBrushProperty, value); } /// <summary> /// Gets the brush used to draw the mouse over brush. /// </summary> [AttachedPropertyBrowsableForType(typeof(TextBox))] [AttachedPropertyBrowsableForType(typeof(CheckBox))] [AttachedPropertyBrowsableForType(typeof(RadioButton))] [AttachedPropertyBrowsableForType(typeof(DatePicker))] [AttachedPropertyBrowsableForType(typeof(ComboBox))] [AttachedPropertyBrowsableForType(typeof(RichTextBox))] public static Brush GetMouseOverBorderBrush(DependencyObject obj) { return (Brush)obj.GetValue(MouseOverBorderBrushProperty); } #endregion #region AttachContentProperty 附加组件模板 /// <summary> /// 附加组件模板 /// </summary> public static readonly DependencyProperty AttachContentProperty = DependencyProperty.RegisterAttached( "AttachContent", typeof(ControlTemplate), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(null)); public static ControlTemplate GetAttachContent(DependencyObject d) { return (ControlTemplate)d.GetValue(AttachContentProperty); } public static void SetAttachContent(DependencyObject obj, ControlTemplate value) { obj.SetValue(AttachContentProperty, value); } #endregion #region WatermarkProperty 水印 /// <summary> /// 水印 /// </summary> public static readonly DependencyProperty WatermarkProperty = DependencyProperty.RegisterAttached( "Watermark", typeof(string), typeof(ControlAttachProperty), new FrameworkPropertyMetadata("")); public static string GetWatermark(DependencyObject d) { return (string)d.GetValue(WatermarkProperty); } public static void SetWatermark(DependencyObject obj, string value) { obj.SetValue(WatermarkProperty, value); } #endregion #region CornerRadiusProperty Border圆角 /// <summary> /// Border圆角 /// </summary> public static readonly DependencyProperty CornerRadiusProperty = DependencyProperty.RegisterAttached( "CornerRadius", typeof(CornerRadius), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(null)); public static CornerRadius GetCornerRadius(DependencyObject d) { return (CornerRadius)d.GetValue(CornerRadiusProperty); } public static void SetCornerRadius(DependencyObject obj, CornerRadius value) { obj.SetValue(CornerRadiusProperty, value); } #endregion #region LabelProperty TextBox的头部Label /// <summary> /// TextBox的头部Label /// </summary> public static readonly DependencyProperty LabelProperty = DependencyProperty.RegisterAttached( "Label", typeof(string), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(null)); [AttachedPropertyBrowsableForType(typeof(TextBox))] public static string GetLabel(DependencyObject d) { return (string)d.GetValue(LabelProperty); } public static void SetLabel(DependencyObject obj, string value) { obj.SetValue(LabelProperty, value); } #endregion #region LabelTemplateProperty TextBox的头部Label模板 /// <summary> /// TextBox的头部Label模板 /// </summary> public static readonly DependencyProperty LabelTemplateProperty = DependencyProperty.RegisterAttached( "LabelTemplate", typeof(ControlTemplate), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(null)); [AttachedPropertyBrowsableForType(typeof(TextBox))] public static ControlTemplate GetLabelTemplate(DependencyObject d) { return (ControlTemplate)d.GetValue(LabelTemplateProperty); } public static void SetLabelTemplate(DependencyObject obj, ControlTemplate value) { obj.SetValue(LabelTemplateProperty, value); } #endregionView Code
2.2 水印效果实现
通过2.1的代码示例，可以看出，水印是内置了一个TextBlock，用附加属性ControlAttachProperty.Watermark设置水印内容，在触发器中检测，当TextBox中有输入值，则隐藏水印的TextBlock，使用示例：
<StackPanel> <TextBox Width="140" Height="40" Margin="3" TextWrapping="Wrap" VerticalScrollBarVisibility="Visible">333333333333333</TextBox> <TextBox Width="150" Height="30" Margin="3" core:ControlAttachProperty.Watermark="我是水印" core:ControlAttachProperty.CornerRadius="2"></TextBox> <TextBox Width="150" Height="30" Margin="3" IsReadOnly="True" core:ControlAttachProperty.CornerRadius="15" SnapsToDevicePixels="True" >我是只读的</TextBox> <TextBox Width="150" Height="30" Margin="3" IsEnabled="False">IsEnabled="False"</TextBox> <TextBox Width="150" Height="30" core:ControlAttachProperty.Watermark="我是水印"></TextBox> </StackPanel>
效果：
2.3 Label标签实现
参考2.1的代码，预留了Label的区域，通过设置附加属性local:ControlAttachProperty.Label设置标签文本，local:ControlAttachProperty.LabelTemplate设置Label标签的模板样式，即可自定义实现Label标签，自定义样式：
<!--TextBox包含附加属性Label的样式--> <Style TargetType="{x:Type TextBox}" x:Key="LabelTextBox" BasedOn="{StaticResource DefaultTextBox}"> <Setter Property="local:ControlAttachProperty.LabelTemplate" > <Setter.Value> <ControlTemplate TargetType="ContentControl"> <Border Width="60" Background="{StaticResource TextLabelBackground}"> <TextBlock VerticalAlignment="Center" HorizontalAlignment="Right" Margin="3" Text="{TemplateBinding Content}"></TextBlock> </Border> </ControlTemplate> </Setter.Value> </Setter> </Style> 使用示例及效果：
<TextBox Width="200" Height="30" Margin="3" core:ControlAttachProperty.Watermark="请输入姓名" Style="{StaticResource LabelTextBox}" core:ControlAttachProperty.Label="姓名："></TextBox>
2.4 扩展功能及自定义扩展
思路和2.3的Label标签实现相似，清除文本框内的内容是一个常用需求，我们就线扩展一个这么一个功能的TextBox，通过附加属性ControlAttachProperty.AttachContent定义扩展功能的模板，模板内定义的是一个按钮FButton（可参考上一篇，本文末尾附录中有链接）
<!--TextBox包含清除Text按钮的样式--> <Style TargetType="{x:Type TextBox}" x:Key="ClearButtonTextBox" BasedOn="{StaticResource DefaultTextBox}"> <Setter Property="local:ControlAttachProperty.AttachContent"> <Setter.Value> <ControlTemplate> <local:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0" local:ControlAttachProperty.IsClearTextButtonBehaviorEnabled="True" Command="local:ControlAttachProperty.ClearTextCommand" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type TextBox}}}" Margin="1,3,1,4" FIconSize="14" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/> </ControlTemplate> </Setter.Value> </Setter> </Style> 这里定义的是显示效果，清除TextBox内容的逻辑代码如何实现的呢？还是附加属性：
- ControlAttachProperty.IsClearTextButtonBehaviorEnabled="True" ：注入事件到当前Button
- Command="local:ControlAttachProperty.ClearTextCommand"：定义Fbutton的命令对象实例Command
- CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type TextBox}}}"：把TextBox作为参数传入
逻辑代码如下，从代码不难看出，它是支持多种输入控件的内容清除的，也就是说该扩展功能可以轻松支持其他输入控件，第四节密码数据的清除也是这样使用的。
#region IsClearTextButtonBehaviorEnabledProperty 清除输入框Text值按钮行为开关（设为ture时才会绑定事件） /// <summary> /// 清除输入框Text值按钮行为开关 /// </summary> public static readonly DependencyProperty IsClearTextButtonBehaviorEnabledProperty = DependencyProperty.RegisterAttached("IsClearTextButtonBehaviorEnabled" , typeof(bool), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(false, IsClearTextButtonBehaviorEnabledChanged)); [AttachedPropertyBrowsableForType(typeof(TextBox))] public static bool GetIsClearTextButtonBehaviorEnabled(DependencyObject d) { return (bool)d.GetValue(IsClearTextButtonBehaviorEnabledProperty); } public static void SetIsClearTextButtonBehaviorEnabled(DependencyObject obj, bool value) { obj.SetValue(IsClearTextButtonBehaviorEnabledProperty, value); } /// <summary> /// 绑定清除Text操作的按钮事件 /// </summary> private static void IsClearTextButtonBehaviorEnabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) { var button = d as FButton; if (e.OldValue != e.NewValue && button != null) { button.CommandBindings.Add(ClearTextCommandBinding); } } #endregion #region ClearTextCommand 清除输入框Text事件命令 /// <summary> /// 清除输入框Text事件命令，需要使用IsClearTextButtonBehaviorEnabledChanged绑定命令 /// </summary> public static RoutedUICommand ClearTextCommand { get; private set; } /// <summary> /// ClearTextCommand绑定事件 /// </summary> private static readonly CommandBinding ClearTextCommandBinding; /// <summary> /// 清除输入框文本值 /// </summary> private static void ClearButtonClick(object sender, ExecutedRoutedEventArgs e) { var tbox = e.Parameter as FrameworkElement; if (tbox == null) return; if (tbox is TextBox) { ((TextBox)tbox).Clear(); } if (tbox is PasswordBox) { ((PasswordBox)tbox).Clear(); } if (tbox is ComboBox) { var cb = tbox as ComboBox; cb.SelectedItem = null; cb.Text = string.Empty; } if (tbox is MultiComboBox) { var cb = tbox as MultiComboBox; cb.SelectedItem = null; cb.UnselectAll(); cb.Text = string.Empty; } if (tbox is DatePicker) { var dp = tbox as DatePicker; dp.SelectedDate = null; dp.Text = string.Empty; } tbox.Focus(); } #endregion /// <summary> /// 静态构造函数 /// </summary> static ControlAttachProperty() { //ClearTextCommand ClearTextCommand = new RoutedUICommand(); ClearTextCommandBinding = new CommandBinding(ClearTextCommand); ClearTextCommandBinding.Executed += ClearButtonClick; //OpenFileCommand OpenFileCommand = new RoutedUICommand(); OpenFileCommandBinding = new CommandBinding(OpenFileCommand); OpenFileCommandBinding.Executed += OpenFileButtonClick; //OpenFolderCommand OpenFolderCommand = new RoutedUICommand(); OpenFolderCommandBinding = new CommandBinding(OpenFolderCommand); OpenFolderCommandBinding.Executed += OpenFolderButtonClick; SaveFileCommand = new RoutedUICommand(); SaveFileCommandBinding = new CommandBinding(SaveFileCommand); SaveFileCommandBinding.Executed += SaveFileButtonClick; }View Code
效果：
当然我们也可以自定义扩展其他功能，如：
<TextBox Width="200" Height="30" Margin="3" core:ControlAttachProperty.Watermark="查询关键词" IsEnabled="True"> <core:ControlAttachProperty.AttachContent> <ControlTemplate> <StackPanel Orientation="Horizontal"> <core:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0" FIconSize="18" Margin="1,1,2,3" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/> <core:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0" FIconSize="22" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/> </StackPanel> </ControlTemplate> </core:ControlAttachProperty.AttachContent> </TextBox> 效果：
由上不难同时实现Label标签和清除文本内容的样式：
<!--TextBox包含附加属性Label，以及ClearText按钮的样式--> <Style TargetType="{x:Type TextBox}" x:Key="LabelClearButtonTextBox" BasedOn="{StaticResource DefaultTextBox}"> <Setter Property="local:ControlAttachProperty.LabelTemplate" > <Setter.Value> <ControlTemplate TargetType="ContentControl"> <Border Width="60" Background="{StaticResource TextLabelBackground}"> <TextBlock VerticalAlignment="Center" HorizontalAlignment="Right" Margin="3" Text="{TemplateBinding Content}"></TextBlock> </Border> </ControlTemplate> </Setter.Value> </Setter> <Setter Property="local:ControlAttachProperty.AttachContent"> <Setter.Value> <ControlTemplate> <local:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0" local:ControlAttachProperty.IsClearTextButtonBehaviorEnabled="True" Command="local:ControlAttachProperty.ClearTextCommand" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type TextBox}}}" Margin="0,3,1,4" FIconSize="14" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/> </ControlTemplate> </Setter.Value> </Setter> </Style>2.6 文件选择输入相关扩展
先看看效果，就明白了。
具体实现原理和上面2.4差不多 ，实现了三个文件、文件夹选择相关的功能扩展，样式代码：
<!--LabelOpenFileTextBox--> <Style TargetType="{x:Type TextBox}" x:Key="LabelOpenFileTextBox" BasedOn="{StaticResource LabelClearButtonTextBox}"> <Setter Property="local:ControlAttachProperty.Label" Value="文件路径"/> <Setter Property="local:ControlAttachProperty.Watermark" Value="选择文件路径"/> <Setter Property="local:ControlAttachProperty.AttachContent"> <Setter.Value> <ControlTemplate> <local:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0" local:ControlAttachProperty.IsOpenFileButtonBehaviorEnabled="True" Command="local:ControlAttachProperty.OpenFileCommand" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type TextBox}}}" Margin="0,1,0,1" FIconSize="22" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/> </ControlTemplate> </Setter.Value> </Setter> </Style> <!--LabelOpenFolderTextBox--> <Style TargetType="{x:Type TextBox}" x:Key="LabelOpenFolderTextBox" BasedOn="{StaticResource LabelClearButtonTextBox}"> <Setter Property="local:ControlAttachProperty.Label" Value="设置路径"/> <Setter Property="local:ControlAttachProperty.Watermark" Value="选择文件夹路径"/> <Setter Property="local:ControlAttachProperty.AttachContent"> <Setter.Value> <ControlTemplate> <local:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0" local:ControlAttachProperty.IsOpenFolderButtonBehaviorEnabled="True" Command="local:ControlAttachProperty.OpenFolderCommand" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type TextBox}}}" Margin="0,1,0,1" FIconSize="22" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/> </ControlTemplate> </Setter.Value> </Setter> </Style> <!--LabelSaveFileTextBox--> <Style TargetType="{x:Type TextBox}" x:Key="LabelSaveFileTextBox" BasedOn="{StaticResource LabelClearButtonTextBox}"> <Setter Property="local:ControlAttachProperty.Label" Value="保存路径"/> <Setter Property="local:ControlAttachProperty.Watermark" Value="选择文件保存路径"/> <Setter Property="local:ControlAttachProperty.AttachContent"> <Setter.Value> <ControlTemplate> <local:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0" local:ControlAttachProperty.IsSaveFileButtonBehaviorEnabled="True" Command="local:ControlAttachProperty.SaveFileCommand" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type TextBox}}}" Margin="0,1,0,1" FIconSize="20" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/> </ControlTemplate> </Setter.Value> </Setter> </Style>当然实现原理和2.4一样，都是依赖属性来实现事件的注入和绑定的，所以就不多废话了：
#region IsOpenFileButtonBehaviorEnabledProperty 选择文件命令行为开关 /// <summary> /// 选择文件命令行为开关 /// </summary> public static readonly DependencyProperty IsOpenFileButtonBehaviorEnabledProperty = DependencyProperty.RegisterAttached("IsOpenFileButtonBehaviorEnabled" , typeof(bool), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(false, IsOpenFileButtonBehaviorEnabledChanged)); [AttachedPropertyBrowsableForType(typeof(TextBox))] public static bool GetIsOpenFileButtonBehaviorEnabled(DependencyObject d) { return (bool)d.GetValue(IsOpenFileButtonBehaviorEnabledProperty); } public static void SetIsOpenFileButtonBehaviorEnabled(DependencyObject obj, bool value) { obj.SetValue(IsOpenFileButtonBehaviorEnabledProperty, value); } private static void IsOpenFileButtonBehaviorEnabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) { var button = d as FButton; if (e.OldValue != e.NewValue && button != null) { button.CommandBindings.Add(OpenFileCommandBinding); } } #endregion #region IsOpenFolderButtonBehaviorEnabledProperty 选择文件夹命令行为开关 /// <summary> /// 选择文件夹命令行为开关 /// </summary> public static readonly DependencyProperty IsOpenFolderButtonBehaviorEnabledProperty = DependencyProperty.RegisterAttached("IsOpenFolderButtonBehaviorEnabled" , typeof(bool), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(false, IsOpenFolderButtonBehaviorEnabledChanged)); [AttachedPropertyBrowsableForType(typeof(TextBox))] public static bool GetIsOpenFolderButtonBehaviorEnabled(DependencyObject d) { return (bool)d.GetValue(IsOpenFolderButtonBehaviorEnabledProperty); } public static void SetIsOpenFolderButtonBehaviorEnabled(DependencyObject obj, bool value) { obj.SetValue(IsOpenFolderButtonBehaviorEnabledProperty, value); } private static void IsOpenFolderButtonBehaviorEnabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) { var button = d as FButton; if (e.OldValue != e.NewValue && button != null) { button.CommandBindings.Add(OpenFolderCommandBinding); } } #endregion #region IsSaveFileButtonBehaviorEnabledProperty 选择文件保存路径及名称 /// <summary> /// 选择文件保存路径及名称 /// </summary> public static readonly DependencyProperty IsSaveFileButtonBehaviorEnabledProperty = DependencyProperty.RegisterAttached("IsSaveFileButtonBehaviorEnabled" , typeof(bool), typeof(ControlAttachProperty), new FrameworkPropertyMetadata(false, IsSaveFileButtonBehaviorEnabledChanged)); [AttachedPropertyBrowsableForType(typeof(TextBox))] public static bool GetIsSaveFileButtonBehaviorEnabled(DependencyObject d) { return (bool)d.GetValue(IsSaveFileButtonBehaviorEnabledProperty); } public static void SetIsSaveFileButtonBehaviorEnabled(DependencyObject obj, bool value) { obj.SetValue(IsSaveFileButtonBehaviorEnabledProperty, value); } private static void IsSaveFileButtonBehaviorEnabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) { var button = d as FButton; if (e.OldValue != e.NewValue && button != null) { button.CommandBindings.Add(SaveFileCommandBinding); } } #endregion #region OpenFileCommand 选择文件命令 /// <summary> /// 选择文件命令，需要使用IsClearTextButtonBehaviorEnabledChanged绑定命令 /// </summary> public static RoutedUICommand OpenFileCommand { get; private set; } /// <summary> /// OpenFileCommand绑定事件 /// </summary> private static readonly CommandBinding OpenFileCommandBinding; /// <summary> /// 执行OpenFileCommand /// </summary> private static void OpenFileButtonClick(object sender, ExecutedRoutedEventArgs e) { var tbox = e.Parameter as FrameworkElement; var txt = tbox as TextBox; string filter = txt.Tag == null ? "所有文件(*.*)|*.*" : txt.Tag.ToString(); if (filter.Contains(".bin")) { filter += "|所有文件(*.*)|*.*"; } if (txt == null) return; OpenFileDialog fd = new OpenFileDialog(); fd.Title = "请选择文件"; //“图像文件(*.bmp, *.jpg)|*.bmp;*.jpg|所有文件(*.*)|*.*” fd.Filter = filter; fd.FileName = txt.Text.Trim(); if (fd.ShowDialog() == true) { txt.Text = fd.FileName; } tbox.Focus(); } #endregion #region OpenFolderCommand 选择文件夹命令 /// <summary> /// 选择文件夹命令 /// </summary> public static RoutedUICommand OpenFolderCommand { get; private set; } /// <summary> /// OpenFolderCommand绑定事件 /// </summary> private static readonly CommandBinding OpenFolderCommandBinding; /// <summary> /// 执行OpenFolderCommand /// </summary> private static void OpenFolderButtonClick(object sender, ExecutedRoutedEventArgs e) { var tbox = e.Parameter as FrameworkElement; var txt = tbox as TextBox; if (txt == null) return; FolderBrowserDialog fd = new FolderBrowserDialog(); fd.Description = "请选择文件路径"; fd.SelectedPath = txt.Text.Trim(); if (fd.ShowDialog() == DialogResult.OK) { txt.Text = fd.SelectedPath; } tbox.Focus(); } #endregion #region SaveFileCommand 选择文件保存路径及名称 /// <summary> /// 选择文件保存路径及名称 /// </summary> public static RoutedUICommand SaveFileCommand { get; private set; } /// <summary> /// SaveFileCommand绑定事件 /// </summary> private static readonly CommandBinding SaveFileCommandBinding; /// <summary> /// 执行OpenFileCommand /// </summary> private static void SaveFileButtonClick(object sender, ExecutedRoutedEventArgs e) { var tbox = e.Parameter as FrameworkElement; var txt = tbox as TextBox; if (txt == null) return; SaveFileDialog fd = new SaveFileDialog(); fd.Title = "文件保存路径"; fd.Filter = "所有文件(*.*)|*.*"; fd.FileName = txt.Text.Trim(); if (fd.ShowDialog() == DialogResult.OK) { txt.Text = fd.FileName; } tbox.Focus(); } #endregion /// <summary> /// 静态构造函数 /// </summary> static ControlAttachProperty() { //ClearTextCommand ClearTextCommand = new RoutedUICommand(); ClearTextCommandBinding = new CommandBinding(ClearTextCommand); ClearTextCommandBinding.Executed += ClearButtonClick; //OpenFileCommand OpenFileCommand = new RoutedUICommand(); OpenFileCommandBinding = new CommandBinding(OpenFileCommand); OpenFileCommandBinding.Executed += OpenFileButtonClick; //OpenFolderCommand OpenFolderCommand = new RoutedUICommand(); OpenFolderCommandBinding = new CommandBinding(OpenFolderCommand); OpenFolderCommandBinding.Executed += OpenFolderButtonClick; SaveFileCommand = new RoutedUICommand(); SaveFileCommandBinding = new CommandBinding(SaveFileCommand); SaveFileCommandBinding.Executed += SaveFileButtonClick; }View Code
三．富文本框RichTextBox控件样式
RichTextBox的样式比较简单：
<!--***************************DefaultRichTextBox***************************--> <Style x:Key="DefaultRichTextBox" TargetType="{x:Type RichTextBox}"> <Setter Property="ContextMenu" Value="{DynamicResource TextBoxContextMenu}" /> <Setter Property="SelectionBrush" Value="{StaticResource TextSelectionBrush}" /> <Setter Property="FontFamily" Value="{StaticResource FontFamily}" /> <Setter Property="FontSize" Value="{StaticResource FontSize}" /> <Setter Property="BorderThickness" Value="1" /> <Setter Property="BorderBrush" Value="{StaticResource ControlBorderBrush}" /> <Setter Property="MinHeight" Value="26" /> <Setter Property="MinWidth" Value="10" /> <Setter Property="Background" Value="{StaticResource TextBackground}" /> <Setter Property="Foreground" Value="{StaticResource TextForeground}" /> <Setter Property="CaretBrush" Value="{StaticResource TextForeground}" /> <Setter Property="local:ControlAttachProperty.FocusBorderBrush" Value="{StaticResource FocusBorderBrush}" /> <Setter Property="local:ControlAttachProperty.MouseOverBorderBrush" Value="{StaticResource MouseOverBorderBrush}" /> <Setter Property="Padding" Value="1" /> <Setter Property="AllowDrop" Value="True" /> <Setter Property="VerticalScrollBarVisibility" Value="Auto" /> <Setter Property="FocusVisualStyle" Value="{x:Null}" /> <Setter Property="ScrollViewer.PanningMode" Value="VerticalFirst" /> <!--该值指示是否启用了笔势--> <Setter Property="Stylus.IsFlicksEnabled" Value="False" /> <!--SnapsToDevicePixels:该值来确定呈现此元素是否应使用特定于设备的像素设置--> <Setter Property="SnapsToDevicePixels" Value="True" /> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type TextBoxBase}"> <Grid> <Border x:Name="Bd" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"> <ScrollViewer x:Name="PART_ContentHost" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" /> </Border> </Grid> <ControlTemplate.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="BorderBrush" Value="{Binding Path=(local:ControlAttachProperty.MouseOverBorderBrush),RelativeSource={RelativeSource Self}}"/> </Trigger> <Trigger Property="IsFocused" Value="True"> <Setter Property="BorderBrush" Value="{Binding Path=(local:ControlAttachProperty.FocusBorderBrush),RelativeSource={RelativeSource Self}}"/> </Trigger> <Trigger Property="IsEnabled" Value="False"> <Setter TargetName="Bd" Property="Opacity" Value="0.5" /> </Trigger> <Trigger Property="IsReadOnly" Value="True"> <Setter TargetName="Bd" Property="Opacity" Value="0.85" /> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> 使用实力及效果：
四．密码输入框PasswordBox控件样式及扩展功能
密码输入控件的样式和第二节文本框TextBox基本一致，就不做详细的说明了，直接上样式的代码，相关逻辑（C#） 代码和上面是一样的（复用）。
<!--TextBox默认样式--> <Style TargetType="{x:Type PasswordBox}" x:Key="DefaultPasswordBox"> <Setter Property="ContextMenu" Value="{DynamicResource TextBoxContextMenu}" /> <Setter Property="SelectionBrush" Value="{StaticResource TextSelectionBrush}" /> <Setter Property="FontFamily" Value="{StaticResource FontFamily}" /> <Setter Property="FontSize" Value="{StaticResource FontSize}" /> <Setter Property="BorderThickness" Value="1" /> <Setter Property="PasswordChar" Value="●"/> <Setter Property="Height" Value="30" /> <Setter Property="Width" Value="200" /> <Setter Property="Background" Value="{StaticResource TextBackground}" /> <Setter Property="Foreground" Value="{StaticResource TextForeground}" /> <Setter Property="Padding" Value="0" /> <Setter Property="BorderBrush" Value="{StaticResource ControlBorderBrush}" /> <Setter Property="local:ControlAttachProperty.FocusBorderBrush" Value="{StaticResource FocusBorderBrush}" /> <Setter Property="local:ControlAttachProperty.MouseOverBorderBrush" Value="{StaticResource MouseOverBorderBrush}" /> <Setter Property="VerticalContentAlignment" Value="Center" /> <!-- change SnapsToDevicePixels to True to view a better border and validation error --> <Setter Property="SnapsToDevicePixels" Value="True" /> <!--英 ['kærət] 美 ['kærət] 插入符号--> <Setter Property="CaretBrush" Value="{StaticResource TextForeground}" /> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type PasswordBox}"> <Grid x:Name="PART_Root"> <Border x:Name="Bg" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" CornerRadius="{TemplateBinding local:ControlAttachProperty.CornerRadius}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" /> <Grid x:Name="PART_InnerGrid"> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto" /> <ColumnDefinition Width="*" /> <ColumnDefinition Width="Auto" /> </Grid.ColumnDefinitions> <!--Label区域--> <ContentControl x:Name="Label" Margin="1" Template="{TemplateBinding local:ControlAttachProperty.LabelTemplate}" Content="{TemplateBinding local:ControlAttachProperty.Label}"/> <!--内容区域--> <ScrollViewer x:Name="PART_ContentHost" BorderThickness="0" Grid.Column="1" IsTabStop="False" Margin="2" VerticalAlignment="Stretch" Background="{x:Null}" /> <!--附加内容区域--> <Border x:Name="PART_AttachContent" Grid.Column="2" Margin="2" VerticalAlignment="Center" HorizontalAlignment="Center" > <ContentControl VerticalAlignment="Center" VerticalContentAlignment="Center" Template="{TemplateBinding local:ControlAttachProperty.AttachContent}" /> </Border> </Grid> </Grid> <ControlTemplate.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="BorderBrush" Value="{Binding Path=(local:ControlAttachProperty.MouseOverBorderBrush),RelativeSource={RelativeSource Self}}"/> </Trigger> <Trigger Property="IsFocused" Value="True"> <Setter Property="BorderBrush" Value="{Binding Path=(local:ControlAttachProperty.FocusBorderBrush),RelativeSource={RelativeSource Self}}"/> </Trigger> <!--不可用--> <Trigger Property="IsEnabled" Value="False"> <Setter TargetName="PART_Root" Property="Opacity" Value="{StaticResource DisableOpacity}"></Setter> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> <!--TextBox包含清除Text按钮的样式--> <Style TargetType="{x:Type PasswordBox}" x:Key="ClearButtonPasswordBox" BasedOn="{StaticResource DefaultPasswordBox}"> <Setter Property="local:ControlAttachProperty.AttachContent"> <Setter.Value> <ControlTemplate> <local:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0" local:ControlAttachProperty.IsClearTextButtonBehaviorEnabled="True" Command="local:ControlAttachProperty.ClearTextCommand" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type PasswordBox}}}" Margin="1,3,1,4" FIconSize="14" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/> </ControlTemplate> </Setter.Value> </Setter> </Style> <!--TextBox包含附加属性Label的样式--> <Style TargetType="{x:Type PasswordBox}" x:Key="LabelPasswordBox" BasedOn="{StaticResource DefaultPasswordBox}"> <Setter Property="local:ControlAttachProperty.LabelTemplate" > <Setter.Value> <ControlTemplate TargetType="ContentControl"> <Border Width="60" Background="{StaticResource TextLabelBackground}"> <TextBlock VerticalAlignment="Center" HorizontalAlignment="Right" Margin="3" Text="{TemplateBinding Content}"></TextBlock> </Border> </ControlTemplate> </Setter.Value> </Setter> </Style> <!--TextBox包含附加属性Label，以及ClearText按钮的样式--> <Style TargetType="{x:Type PasswordBox}" x:Key="LabelClearButtonPasswordBox" BasedOn="{StaticResource DefaultPasswordBox}"> <Setter Property="local:ControlAttachProperty.LabelTemplate" > <Setter.Value> <ControlTemplate TargetType="ContentControl"> <Border Width="60" Background="{StaticResource TextLabelBackground}"> <TextBlock VerticalAlignment="Center" HorizontalAlignment="Right" Margin="3" Text="{TemplateBinding Content}"></TextBlock> </Border> </ControlTemplate> </Setter.Value> </Setter> <Setter Property="local:ControlAttachProperty.AttachContent"> <Setter.Value> <ControlTemplate> <local:FButton FIcon="" Style="{StaticResource FButton_Transparency}" IsTabStop="False" FIconMargin="0" local:ControlAttachProperty.IsClearTextButtonBehaviorEnabled="True" Command="local:ControlAttachProperty.ClearTextCommand" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type PasswordBox}}}" Margin="0,3,1,4" FIconSize="14" Foreground="{StaticResource TextForeground}" Cursor="Arrow"/> </ControlTemplate> </Setter.Value> </Setter> </Style>View Code
使用示例及效果：
附录.参考引用
WPF自定义控件与样式(1)-矢量字体图标(iconfont)
WPF自定义控件与样式(2)-自定义按钮FButton
《深入浅出WPF》学习笔记二数据绑定(Binding)、依赖属性和附加属性
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原标题：WPF自定义控件与样式
关键词：wpf
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